Yes, I was able to move and interact with objects.
I couldn't replicate the bug that makes opening the inventory impossible, but:
- If you hide under the bed while there's no enemy nearby the "ryhtm game" doesn't show up and the only option you have is restarting the game.
- If an enemy appears and you try to hide under the bed but the enemy is too close you can't complete the "ryhtm game" - the screen turns black and you immediately get back to Room 7. The textures/tiles won't load, even though you can still move around and interact with objects in the room.
I'm sorry to hear that the game engine restricts your work. This game is full of wonderful ideas, so I'm pretty sure it deserves a better engine (Game Maker would be perfect for this project in my opinion), but I guess you'll have to stick with the one you started with, as it would be too much work to start everything from scratch again.
I'm sorry if I'm being annoying.