Can you confirm on which device/browser you got the fullscreen issue?
Losing back to the previous day was intended, mainly because the VFX get really tough in the end, especially in the hardest mode, so I felt it a good idea to step down before trying it full power again. The decision comes in part from the fact that the intensity of the VFX has a share of random: a first step that would be too easy wouldn't allow the player to... gain the skills necessary to overcome the VFX in the higher levels... or so I thought at the time.
Also, it adds to the boredom/frustration, which is the central theme of the game. If I were true to the spirit of the game, I would have made a game over busted or infected on each fail, but I was seriously concerned noone would endure it to the end! ^^'
Each fail gets a point penalty. Aside from that, the score isn't really meaningful. But it gets red when you're setting a new highscore, and I love that feeling! lol
The game evolved a lot during development, there was no initial plan, and I probably took a lot of bad decisions along the way! But it was fun and kept me busy during confinement. ;) Cheers
The graphics are great, but buying the enemies is a bit strange, why not increase difficulty automatically? Also, it has a very short life, I purchased everything in a few minutes, and then the game runs alone...
