Welcome to JGO! ;D
I tested out the game, feels a bit like a rogue-like! 
I do have one question though. How come the character moves by tile (from what it looks like) on the X-axis, but freely on the Y-axis? The movement on the Y-axis is a bit slow and odd because of this. Perhaps just a glitch? Is there something I’m missing?
I’ll rephrase if necessary.
For the controls, I would recommend possibly using the arrow keys instead of WASD, because right now it looks like you have no plans to implement mouse support, which is usually why most developers implement WASD controls in their games.
It’s a little bit too early in development, but I personally see no issues with the game’s current state, despite the fact that there’s no tile collision. Looking good so far though!
Also, I’m pretty sure a lot of people here (including me) would be happy to make some art assets for your game in case you need some help with those, because being honest, the current ones don’t look that good in my opinion. Sorry :(.
Keep us posted though! Sounds like a good idea so far.
EDIT: Also, the floor tiles remind me of the Hermann’s Grid Illusion. Nice effect there!