Nice working game mechanic!
Graphics are simple yet effective.

Could be improved somehow:

• don't get the player stuck on walls! (see demos/collide sample)
• maaaybe make killing the dragons a bit more dramatic (a couple of dashes, and the bit lizard is gone :)
• difficulty is a bit so-so (too easy to walk past enemies and bullets)
• particles!!!

note: your latest update is missing the game!

haha, sort fun and retro. Love the sound effects.

Somehow, I love the primitiveness of this, reminds me of the early Apple ][ days. :)

Maybe have the dragon's chains or cage break when you've collected all the treasure, then it moves and is more aggressive. Or have it do that when you have one treasure to go, like the last Space Invader.

Good but a little easy. Maybe have more aggressive (faster) fireballs from the dragon, especially each time the player strikes the dragon with the sword.

I like thattomhall's suggestion, dragon is in cage, can still shoot fire, but once all treasures collected, dragon breaks out of cage and actively seeks player.

Player can only damage dragon outside of cage so all treasures are requires to be grabbed before next level of play.

Improved intro and next level sound. Increased initial difficulty.