These are great collections of three games each at cheap prices.
Some of them can be downloaded on different Sony systems.
Instant Indie Collection Volume 1 (for PS4, PS3, Vita):
- Stealth Inc 2
- The Swapper
- Thomas Was Alone
https://store.playstation.com/en-au/product/EP4395-CUSA01431…
Instant Indie Collection Volume 2 (for PS4, PS3, Vita):
- The Swindle
- Nova-111
- Pumped BMX +
https://store.playstation.com/en-au/product/EP4395-CUSA02348…
Instant Indie Collection Volume 3 (for PS4, Vita):
https://store.playstation.com/en-au/product/EP4395-CUSA01183…
- Action Henk
- Stikbold! A Dodgeball Adventure
- 10 Second Ninja X
Instant Indie Collection Volume 4 (for PS4, 1 also for Vita):
- Hue (PS4+Vita)
- Dear Esther
- The Flame in the Flood Complete Edition
For me, Vol 1 and Vol 4 are the standouts.
Vol 5 is already posted.
Enjoy!