This is a good interpretation of minesweeper. I'd love to put down more time into it, but being on a timer's a bit stressful. I noticed that a pest can be right next to a flower/grass tile in some cases which makes it hard to not accidentally run into a bomb. It does make up for it by giving you health as well as occasional powerups. I like the cursor animation. Ergonomically, having to enter a mark mode to drop a flag is a bit uncomfortable, versus having a dedicated drop flag key instead. I think you have a great concept here and should def expand on it, even past the 3310 limitations.