Formalin Marina is the third stage in Laboratory Island.
- 1 Surge Base spawns as the boss after 0.07 seconds2f.
- Infinite UltraBaaBaas spawn after 13.33 seconds400f, delay 13.33~16.67 seconds400f~500f.
- 1 Le'Solar spawns after 26.67 seconds800f.
- 5 Star Pengs spawn after 33.33 seconds1,000f, delay 40~43.33 seconds1,200f~1,300f.
- 2 Kid Tappas spawn after 53.33 seconds1,600f, delay 43.33~46.67 seconds1,300f~1,400f.
- 2 General GreGories spawn after 93.33 seconds2,800f, delay 76.67~80 seconds2,300f~2,400f.
- 3 Ribbos spawn after 106.67 seconds3,200f, delay 26.67~33.33 seconds800f~1,000f.
- 1 Project A spawns after 140 seconds4,200f.
Lure the enemies close to your base so the Surge Base can't reach your cats, then use anti-Alien cats such as Corrupted Psychocat, Seafarer Cat, Chill Cat and talented Can Can Cat to kill/crowd-control them, but remember to bring a Barrier Breaker for the UltraBaaBaas, like The Kitty of Liberty or any Elemental Pixies. Since there are several backliners, Golfer Cat is good for killing them with his Long Distance ability.