>>713487018
They're both pretty fun, they have patches so you can play them both in English
Million Monkeys is quite a unique game and takes some getting used to since it's an arcadey action game. However, some of the later mission designs are a bit questionable.
Big Mission is like a smaller-scale mainline game and feels more like a platformer. It's a simple game but pretty charming and doesn't take very long to beat
If you're in the mood for more platformer-focused gameplay then try out Big Mission, if you want a more arcadey action thing or just want to see what the fuck's going on then play Million Monkeys
Both are worth a play either way