I think the game is bugged. I don't see any followers, just the collectable icon on the floor.
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If you move around the level, are there other fans (Otomos, Takos, Pebbles and Jailbirds)? You don’t actually start with any followers, you first have to convert other fans for them to become followers.
To do this, you walk over the blue tokens to pick them up, then select them with your mouse wheel or the 4 key (the icon in the bottom right, showing you how many tokens you have, becomes a bit bigger once selected) and throw them at whoever you want to convert (it takes 10 tokens for the small ones and you get 5 for every collectible). And once they’re converted, you move the target circle over them while holding right click, then they will follow you.
Otherwise, if there really are no fans roaming the level, then it would indeed seem to be a bug.
I see, I finally got to playing it once I learned how to use the tokens to convert the fans that are wandering about.
A keybinding can be added above each resource so players know which buttons to press to select them as ammo. I didn't know that the blue tokens could be used as ammo, which causes a bit of confusion.