Long late-game maps slowed down and locked up

Status: Fixed in 0.1.8.21

Reported: Oct 21, 2026
Fixed: Oct 21, 2026 in 0.1.8.21
Seen in version: 0.1.8.20 and earlier

What happened: very long games with many towers (around wave 60 with 70 towers) slowed to a crawl and could lock up, especially at 5x.

What was fixed: when the battle gets too heavy the game now runs a little slower instead of freezing, so the window keeps responding. Towers find targets with less work, Cold Snap snow costs much less, and tower bases draw in one piece. More speed work is coming in the next update.