diff --git a/programs/games/heliothryx/game/rsgamelogic.c b/programs/games/heliothryx/game/rsgamelogic.c
new file mode 100644
index 0000000000..36b2bcb0b0
--- /dev/null
+++ b/programs/games/heliothryx/game/rsgamelogic.c
@@ -0,0 +1,419 @@
+#include "rsgamelogic.h"
+
+#include "rsgametext.h"
+
+#include "rsgamemenu.h"
+
+#include "rsgamedraw.h"
+
+#include "rskos.h"
+
+#include "rsgentex.h"
+#include "rssoundgen.h"
+#include "rsnoise.h"
+
+#include "rs/rsplatform.h"
+
+
+#ifdef RS_USE_C_LIBS // linux version
+    #include <math.h>
+    #include <stdlib.h> 
+    #include <string.h>
+    
+    #include "rs/rskeyboard.h"
+#endif
+
+
+
+
+int next_rock_timer = 0;
+
+void next_stage_now() {
+    game.stage_timer = 0;
+    game.stage++;
+};
+
+void next_stage_after(int t) {
+    if (game.stage_timer > t) {
+        next_stage_now();
+    };
+};
+
+void next_stage_after_sec(int t) {
+    next_stage_after(t*25);
+};
+
+
+
+
+int check_collision(int obj1, int obj2) {
+    // obj1 must be bullet 
+    // obj2 can be anything
+    
+    if ( game.objs[obj1].obj_type == OBJ_BULLET ) {
+        
+        if ( ( abs(game.objs[obj1].y - game.objs[obj2].y) < ( 4 + game.objs[obj2].radius ) ) 
+            && ( abs( (game.objs[obj1].x - 8) - game.objs[obj2].x) < ( 8 + game.objs[obj2].radius ) )  ){
+            return 1;
+        };
+        
+    };
+    
+    return 0;
+    
+};
+
+int check_collision_with_player(int obj1) {
+    
+    const int player_radius = 3;
+    
+    int obj_radius = game.objs[obj1].radius;
+//    if (game.objs[obj1].obj_type == OBJ_RED_BULLET) {
+//        obj_radius = 3;
+//    };
+    
+//    if ( game.objs[obj1].obj_type == OBJ_RED_BULLET ) {
+        
+        if ( ( abs(game.objs[obj1].y - game.player_y) < ( obj_radius + player_radius ) ) 
+            && ( abs( (game.objs[obj1].x ) - game.player_x) < ( obj_radius + 4 + player_radius ) )  ){
+            return 1;
+        };
+        
+//    };
+    
+    return 0;
+    
+};
+
+void player_hit() {
+    
+    game.health--;
+
+    
+    if (game.health < 1) {
+        game.status = STATUS_MENU;
+        menu_open( MENU_GAME_OVER );
+    };
+    
+};
+
+
+void GameProcess() {
+    
+    if (game.status == STATUS_PLAYING) {
+            
+        // shoot
+
+        if ( ( (game.shoot_keypressed) || (is_key_pressed(RS_ATTACK_KEY_MASK)) ) && (game.ammo>0) ) {
+                
+            game.shoot_delay ++;
+                
+            if (game.shoot_delay > GAME_SHOOT_PERIOD) {
+        
+//                if (game.ammo > 0) {
+                    
+                    game.shoot_restore_delay = 0;
+                    game.ammo--;
+                    soundbuf_play(&game.sound_test1);
+                    game_obj_add( game_obj( OBJ_BULLET, 0, 0, 0, game.player_x+5, game.player_y, 0, 0.0) );
+                    
+//                };
+                
+                game.shoot_delay -= GAME_SHOOT_PERIOD;
+                game.shoot_keypressed = 0;
+            
+            };
+        }
+        else {
+            
+            if (game.ammo < GAME_AMMO_MAX) {
+                game.shoot_restore_delay++;
+                
+                if (game.shoot_restore_delay > GAME_SHOOT_PERIOD * 2) {
+                        
+                    game.shoot_delay++;
+
+                    if (game.shoot_delay > GAME_SHOOT_PERIOD) {
+                        game.ammo++;
+                        game.shoot_delay -= GAME_SHOOT_PERIOD;
+                    };
+                    
+                };
+                
+            };
+            
+        };
+            
+            
+            
+        
+        int speed = 4;
+        int bullet_speed = 11;
+        int red_bullet_speed = 8;
+        int rock_speed = 6;
+        
+        game.player_x += speed * ( is_key_pressed(RS_ARROW_RIGHT_MASK) - is_key_pressed(RS_ARROW_LEFT_MASK) );
+        game.player_y += speed * ( is_key_pressed(RS_ARROW_DOWN_MASK) - is_key_pressed(RS_ARROW_UP_MASK) );
+        
+        game.player_x = rs_clamp_i(game.player_x, 5, GAME_WIDTH-25);
+        game.player_y = rs_clamp_i(game.player_y, 5, GAME_HEIGHT - 25);
+        
+        game.tz += 1;
+        
+        
+
+        
+        
+        
+        game.stage_timer++;
+        
+        if (game.stage == 0) {
+            
+            // level start
+            
+            next_stage_after_sec(3);
+            
+        }
+        
+        else if (game.stage == 1) {
+                
+//            game.stage = 4;
+            
+            // rocks
+            next_rock_timer--;
+            if (next_rock_timer < 1) {
+                next_rock_timer = 9 + rs_rand()%16;
+                //game_obj_add( game_obj( ((rs_rand() % 512) > 256) ? OBJ_ROCK : OBJ_MINIROCK, 0, rs_rand() % ROCKS_COUNT , 32, GAME_WIDTH + 100, 30 + rs_rand()%(GAME_HEIGHT-60), 0, 0.0 ) );
+                game_obj_add( game_obj( OBJ_ROCK, OBJ_FLAG_ENEMY, rs_rand() % ROCKS_COUNT , game.tex_rocks[0].w/2, GAME_WIDTH + 50, 30 + rs_rand()%(GAME_HEIGHT-90), 0, 0.0 ) );
+            };
+        
+            next_stage_after_sec(12);
+            
+        }
+        
+        if (game.stage == 2) {
+            
+            next_stage_after_sec(4);
+            
+        }
+        
+        else if (game.stage == 3) {
+            
+            // rocks
+            next_rock_timer--;
+            if (next_rock_timer < 1) {
+                next_rock_timer = 10 + rs_rand()%16;
+                //game_obj_add( game_obj( ((rs_rand() % 512) > 256) ? OBJ_ROCK : OBJ_MINIROCK, 0, rs_rand() % ROCKS_COUNT , 32, GAME_WIDTH + 100, 30 + rs_rand()%(GAME_HEIGHT-60), 0, 0.0 ) );
+                game_obj_add( game_obj( OBJ_MINIROCK, OBJ_FLAG_ENEMY, rs_rand() % ROCKS_COUNT , game.tex_minirocks[0].w/2, GAME_WIDTH + 50, 30 + rs_rand()%(GAME_HEIGHT-90), 0, 0.0 ) );
+            };
+        
+            next_stage_after_sec(16);
+            
+        }
+        
+        else if (game.stage == 4) {
+            
+            next_stage_after_sec(4);
+            
+        }
+        
+        else if (game.stage == 5) {
+            
+            // rocks
+            next_rock_timer--;
+            if (next_rock_timer < 1) {
+                next_rock_timer = 5;
+                //game_obj_add( game_obj( ((rs_rand() % 512) > 256) ? OBJ_ROCK : OBJ_MINIROCK, 0, rs_rand() % ROCKS_COUNT , 32, GAME_WIDTH + 100, 30 + rs_rand()%(GAME_HEIGHT-60), 0, 0.0 ) );
+                game_obj_add( game_obj( OBJ_MINIROCK, OBJ_FLAG_ENEMY | OBJ_FLAG_SIN, rs_rand() % ROCKS_COUNT , game.tex_minirocks[0].w/2, GAME_WIDTH + 50, GAME_HEIGHT/8, 0, 0.0 ) );
+            };
+        
+            next_stage_after_sec(6);
+            
+        }
+        
+        else if (game.stage == 6) {
+            
+            // mix rocks
+            next_rock_timer--;
+            if (next_rock_timer < 1) {
+                next_rock_timer = 9 + rs_rand()%12;
+                //game_obj_add( game_obj( ((rs_rand() % 512) > 256) ? OBJ_ROCK : OBJ_MINIROCK, 0, rs_rand() % ROCKS_COUNT , 32, GAME_WIDTH + 100, 30 + rs_rand()%(GAME_HEIGHT-60), 0, 0.0 ) );
+                game_obj_add( game_obj( rs_rand()%1024 < 768 ? OBJ_MINIROCK : OBJ_ROCK, OBJ_FLAG_ENEMY, rs_rand() % ROCKS_COUNT , 
+                                       rs_rand()%1024 < 768 ? game.tex_minirocks[0].w/2 : game.tex_rocks[0].w/2, GAME_WIDTH + 100, 30 + rs_rand()%(GAME_HEIGHT-90), 0, 0.0 ) );
+            };
+        
+            next_stage_after_sec(10);
+            
+        }
+        
+        else if (game.stage == 7) {
+            
+            
+            if (game.stage_timer > 3*25) {
+                next_stage_now();
+                
+                game_obj_add( game_obj( OBJ_TURRET, OBJ_FLAG_ENEMY | OBJ_FLAG_BOSS, 60, game.tex_rocks[0].w/2, GAME_WIDTH+60, GAME_HEIGHT/2, 0, 0.0 ) );
+                
+            };
+            
+        }
+        
+        else if (game.stage == 8) {
+                
+            if ( IS_BIT_SET(game.flags, GAME_FLAG_BOSS_DESTROYED) ) {
+                next_stage_now();
+            };
+            
+        }
+        
+        else if (game.stage == 9) {
+            next_stage_after_sec(2);
+        }                
+        else if (game.stage == 10) {
+            
+            game.status = STATUS_MENU;
+            menu_open( MENU_LEVEL_PASSED );
+        
+            level_passed_score_str[1] = '0' + (game.score / 100) % 10;
+            level_passed_score_str[2] = '0' + (game.score / 10) % 10;
+            level_passed_score_str[3] = '0' + (game.score / 1) % 10;
+            
+        };
+        
+        
+        
+        
+
+        int i, j;
+        game_obj_t *obj;
+        
+        for (i = 0; i < game.objs_count; i++) {
+            
+            obj = &(game.objs[i]);
+            
+            if (obj->obj_type == OBJ_BULLET) {
+                    
+                obj->x += bullet_speed;
+                if (obj->x > GAME_WIDTH) {
+                    // destroy object
+                    game_obj_remove(i);
+                    i--;
+                    continue;
+                };
+                
+                for (j = 0; j < game.objs_count; j++) {
+                    if (IS_BIT_SET(game.objs[j].flags, OBJ_FLAG_ENEMY)) {
+                        if (check_collision(i, j)) {
+                            if (IS_BIT_SET( game.objs[j].flags, OBJ_FLAG_BOSS)) {
+                                game.objs[j].tag--;
+                                if (game.objs[j].tag < 1) {
+                                    BIT_SET( game.objs[j].flags, OBJ_FLAG_DESTROYED );
+                                    BIT_SET( game.flags, GAME_FLAG_BOSS_DESTROYED );
+                                    game.score += 50;
+                                };
+                            }
+                            else {
+                                BIT_SET( game.objs[j].flags, OBJ_FLAG_DESTROYED );
+                                game.score += game.objs[j].obj_type == OBJ_ROCK ? 2 : 3;
+                            };
+                            game_obj_remove(i); 
+                            i--;
+                            break; // continue parent loop
+                        };
+                    };
+                };
+                
+            }
+            
+            else if (obj->obj_type == OBJ_RED_BULLET) {
+                
+                obj->x -= red_bullet_speed;
+                if (obj->x < 4) {
+                    // destroy object
+                    game_obj_remove(i);
+                    i--;
+                    continue;
+                };
+                
+                if (check_collision_with_player(i)) {
+                    player_hit();
+                    game_obj_remove(i);
+                    i--;
+                    continue;
+                };
+                
+            }
+            
+            else if (obj->obj_type == OBJ_EXPLOSION) {
+                
+                obj->t++;
+                if (obj->t >= EXPLOSIONS_COUNT) {
+                    game_obj_remove(i);
+                    i--;
+                    continue;
+                };
+                
+            }
+            else if ( (obj->obj_type == OBJ_ROCK) || (obj->obj_type == OBJ_MINIROCK) ) {
+                
+                obj->x -= rock_speed;
+                if (obj->x < - obj->radius * 2) {
+                    game_obj_remove(i);
+                    i--;
+                    continue;
+                };
+                
+                if ( IS_BIT_SET(obj->flags, OBJ_FLAG_SIN) ) {
+                    obj->f += 0.2;
+                    obj->y += 7.0 * sin(obj->f);
+                };
+                
+                if ( check_collision_with_player(i) ) {
+                    player_hit();
+                    game_obj_remove(i);
+                    i--;
+                    continue;
+                };
+                
+            }
+            else if ( obj->obj_type == OBJ_TURRET ) {
+                
+                if (obj->x > GAME_WIDTH*3/4) {
+                    obj->x -= 2;
+                }
+                else {
+                    obj->f += 0.03;
+                    obj->y = GAME_HEIGHT * ( 0.5 + 0.3*sin(obj->f) );
+                };
+                
+                obj->t--;
+                if (obj->t < 1) {
+                    game_obj_add( game_obj( OBJ_RED_BULLET, 0, 0, 3, obj->x - 30, obj->y, 0, 0) );
+                    obj->t = 10 + rs_rand() % 20;
+                };
+                
+            };
+            
+        };
+        
+        
+        
+        for (i = 0; i < game.objs_count; i++) {
+            if ( IS_BIT_SET( game.objs[i].flags, OBJ_FLAG_DESTROYED ) ) {
+                game_obj_add( game_obj( OBJ_EXPLOSION, 0, 0, EXPLOSION_RADIUS, game.objs[i].x, game.objs[i].y, 0, 0.0 ) );
+                game_obj_remove(i);
+                i--;
+                
+            };
+        };
+        
+ 
+
+    };
+
+    game_draw();
+
+}
+
+
+
diff --git a/programs/games/heliothryx/game/rsgamelogic.h b/programs/games/heliothryx/game/rsgamelogic.h
new file mode 100644
index 0000000000..3f85a856bc
--- /dev/null
+++ b/programs/games/heliothryx/game/rsgamelogic.h
@@ -0,0 +1,26 @@
+#ifndef RSGAMELOGIC_H_INCLUDED
+#define RSGAMELOGIC_H_INCLUDED
+
+/*
+
+    Heliothryx
+    Game by Roman Shuvalov
+
+*/
+
+#ifndef RS_LINUX
+    #ifndef RS_WIN32
+        #ifndef RS_KOS
+            #error Please specify platform
+        #endif
+    #endif
+#endif
+
+
+#include "rsgame.h"
+
+
+void GameProcess();
+
+
+#endif // RSGAME_H_INCLUDED