Add skill Summon Tower Skill : you can learn this skill after upgrade Seal Crystal to level 3
First, cast the skill on the tower you want to summon, then a tower icon will appear above the shortcut bar
Then you cast the tower anywhere, but the parent tower will deactivate while the tower is summon
Add monster portal, monsters in waves will summon in monster portal. You can destroy monster portal to get relic, but your ATK must be higher than the monster portal DEF.
Remake tech tree.
Many tower UI change.
Add rain weather when Disaster waves start
0.6.0 Summon Tower Skill & Monster Lair
Source: Steam Community (opens in a new tab)