The only thing I can put against dev (not really) is there's no x-platform sync between clients. Continuing your game on a phone could be a cool feature, even if not from some centralized server they pay for, but from your own google drive or whatever.

Java? Sorry OP I only download open source softere developed with Rust /s

If I want to play a factory game where you need to build defenses I'd go play Factorio and maybe stab myself in the throat a little because that's about how fun having to deal with enemies in a factory game is.

It's also on Steam for a couple of bucks if you want a simple way to support the dev!

environmentalists might not like it for obvious reasons.

It's great and all (it really is), but the target audience was just presented factorio 2.0 (and space age), so we're busy for a few months.

I wouldn't call the game 'extremely high difficulty', it even has some easier levels early on (at least when I played it a couple of years ago). I'm not a regular tower-defense or sim game player and I was able to complete Serpulo. It can be a challenging puzzle at times, but it's not a game I'd feel a need to warn people about difficulty-wise.

Disclaimer: this game may be addictive for some individuals.

Seconding (although I have a tendency to marathon the campaign of any game I think is excellent). No need for predatory tricks like loots, this is just a damn fun game.

It’s very weird for a FOSS enthusiast not to advertise one of the best open-source games of all time so here I am trying to make it spoken about again.

IIRC I found it in a 'top 100 FOSS games' list because it was one of the first which wasn't an open-sourced cloning of an existing game. No disrespect for clones and adaptations at all, but it's extra special to see original softwares so good that even people who don't care about FOSSness would use them.

Unironically, I had to delete this game from my phone because I wasn't getting work done. This game slaps.

I highly recommend this game! I played through it with a friend and really enjoyed it. I think I recommend it with more than one player

Definitely interested in trying this one out. Haven't dove into the FOSS games category yet

Excellent game - highly recommend

Well not really difficult, after you realize that you can put down buildings while on pause. The first few levels are easy tower defence... Later on you can win every level by building mid tier flying robots (iirc). Still... Great game!