Interesting concept guys! However, it is very buggy and it's confusing to know what the goal is.
I like the idea of being a small ant in a familiar but large environment and having to join up a small ant army in the process. However, it gets really buggy when joining the small ants with each other as they tend to bug out when they move with the player or collide with other objects.
If you consider working on the game more after the jam, you could try adding some platforming and some puzzles that involve the small ants in some meaningful way to keep the game engaging. Increasing the movement speed of the player would increase enjoyment as well since it can be quite tedious having to move the character across the map.
Hope this feedback helps but I definitely would be interested in seeing this concept develop further.