For anyone struggling to get the chip system to work like myself this is how you do it.
Buy enough chips to unlock your first tier, 10 i believe, add to the tier, then buy 1 more of the new tier and the option should appear to equip it when you click a chip slot.
Great game. Just the kind of chilled idle game i enjoy.
A few things though. (only on 1st restart so may be fixed as i rpgress) the A and D buttons dont switch planets, the W and S keys work fine though. (using Firefox) and i really hate that i have to be pixel perfect (not an exageration) when clicking on planets on the map.
Other than that. Loving this.
i really do like this game. if i could make one change though it'd be the ability to be able to have either 2 "mazes" on the go on the same screenor multiple saves on same browser to aid in the experimenting without losing all invested time on my main "maze"
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 "Idle Hero Tower Defense"){kind=icon}
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 "Idle Tower Defence"){kind=icon}