I think there are a couple sequels for this too FYI
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I remember the second being just as fun, the third one is some sort of an online game?
OMD3 is the same as OMD2.
There was an "Orcs Must Die! Unleashed" that is technically the 3rd game in the series and it was an online MOBA-style game, but it's been shut down and is impossible to play nowadays.
I think the 3rd one supports multiplayer but still has at least 1 single player campaign.
Loved this series!
OMD3 was online multi-player and was one of the games in Stadia that I and a friend of mine would play a ton of.
So much fun.
I enjoyed this title as well. Just simple mindless fun
I've got this one in the backlog (installed, never played), but I also have Bloons TD6 but got a bit bored with it lately - is it different enough to be fresh?
I have never played Bloons TD6. You may have to try it out!