Cactus is probably the single best mastery/arcade style twin-stick shooter out there. Don't let the cute looks fool you, while this game is solid to just enjoy, the chaining and level design offer great challenge if you want it, and the way each character changes both the basic play and the way you chain a level show a just fantastic design level.
It usually goes $5 in sales, but it's still crazy we can get games that good for so little.
I used to be very patientgamer, but my patience model changed after finding again and again that buying late meant devs had wholly moved on from a game by the time I got it, and would hardly ever do basic needed fixes, things that needed to have been talked about earlier in the project. I also noticed how some early access sales would take years for the price to go up and then back down again for what amounted to only a few dollars of savings. Savings that, as I watch games I'm interested in fail in obscurity over and over, I don't feel quite right about strictly withholding from the few devs taking chances on such projects for me, on top of not being around to try and help the project deliver a better game to players.
So, now I do buy some games in early access or even newly released, where I can poke the dev while they are still around, and my patience includes waiting for games to get through those after-buying growing pains instead of just waiting for them to drop into the discount bins, mostly forgotten by their devs and players both.
I'm still generally more strictly price-patient on most anything larger scale, both by devs and by audience.