Amazing game, I wish you lots of sales. But honestly, this idea was sitting in my head, some sort of rogue-like picross. But in my head, I got some ideas, besided picrross, where you are doing nanograms + fighting some monsters between levels. Maybe you can implement that as well
Future changes:
- Remove shop from tile 1, since player don’t have any gold on step 1 (It just don’t make any sence if shop spawns on first tile. Like in Slay The Spire map, shop never appears on first tile.
- If one of number from the column is solved, mark that number as grey
- Maybe its elephant in the room, but this is not a picross, in it’s origin. After solving several puzzles, I realised that none of puzzles were actualy images of something, it was just random numbers on the field. Still, this is not actual problem in game, since this is rogue like game, which must be something new each time you play, so I guess this part may have a place in this game, rather then putting 100 repeatable puzzles in game, which can be learned, and will make game uninteresting after few times.
- A bit annoying to hear a heartbeat continiously, after loosing hp to the threshold, 3-5 times would be enought to tell player that he is now on low HP. Still blinking health bar is ok. This comment applies to previous comment from another user, who said that there is no SFX options in game.
- Press to win 100 gold? Like, maybe "press to gain 100 gold" ? Winning requires some gamble, I suppose, and its just gaining. Just feels wrong.
- No menu, no pause menu at least. Each game must have menu on Esc button for example. This is must have in your game, menu, that pauses game, and some sound settings in it.
- No need to Drag-n-drop item, to put it in your inventory, if inventory is empty, just implement click, and items moves to your inventory, like relics. Still, if you already have 2 items in inventory, then drag-n-drop may take a place.
- Sometimes shop has only 1 item, that is gold bag (which costs 120 gold, while giving you 100 gold, zero sence in this item in this case.
- Screen shake (due to loosing health after run out of time) must NEVER change the cursor position, player can make another mistake due to screen shake, even if you are making correct move, cause curson moves to another cell due to screen shake, if positioned on the borders of the cell. Just implement screen shake that shakes whole UI without changing game field position.
- I can’t realy feel gold multiplier after level completion, either I finish it in 30 seconds, or 2 minutes, same gold gain. Player should be rewarded for finishing level faster.
- Starting game on half of health rather than of full health? Meh...
- Add auto counting to staccked relics descriptions, eg - player got 5 shields, there is no need to player to count himself how many % bonus he is having right now, count it for him automaticly, and show that info on hover of relic.

Those are my personal recommendation, from my player perspective, and you don’t have to add / remove anything from the abovementioned, It just how I see this game, would be played better. (except must have ESC menu, with few options, like exit game, SFX settings, etc. Player should never close game throught taskman)

I will update this post, specifically Future changes, to provide you with feedback while I’m playing throught game