Arcade Game: Tylz [Prototype] (1984 Mylstar)
34A maze/shooting 'em up game where you control a jester to either walk on or shoot tiles to change them from black to yellow or purple. You can also walk over holes to to change tiles to purple. A clown will appear sometimes. By walking over, the level ends and the player is transported to the next few levels beyond the last one. The enemes in this game are solidiers, knights, elephants, ostrich like birds, archers, and royal characters like princes, queens, and kings that the player can shoot to temporarily defeat them. There's also a flat block that can only be defeated by shooting its narrow side which cannot be done directly from the front or behind. There are also flashing tiles taht the player has to get to prevent the cracks of the tile. Once the player steps or shoots these, he is temporarily invincible until the screen stops flashing.
Gameplay starts at 1:54
Note: Used invincibility cheat after down to last life. The game is endless as the last level is repeated after you've beaten it so I quit afterwards.