Sony is making one of 2015’s quietest hits part of its PlayStation Plus offerings at no extra charge.

For December, PlayStation-system owners who subscribe to the PS Plus service will get a number of additions to that program’s Instant Games Library feature. Plus costs $10 per month or $60 per year, and it enables online multiplayer on PS4 in addition to giving away a list of games each month. And as long as players maintain their PS Plus subscription, they will continue to own these games. Subscribers can get these games at no additional cost by finding the PS Plus tab in the PlayStation Store.

For December, as is usual, Sony has a handful of games for the PlayStation 4, PlayStation 3, and Vita devices. Let’s take a look at ’em.

PlayStation 4

Invisible, Inc.

This turn-based stealth game is one of 2015’s best games. It has players infiltrating procedurally generated levels using a variety of characters that have different espionage-related capabilities. Developer Klei built the game to empower players to tackle the challenges in any number of ways, and discovering creative solutions to evade danger is one of the reasons I keep going back to Invisible, Inc. And now no PS Plus subscriber has an excuse to miss out.

Stories: Path of Destinies

This adventure features hack-‘n’-slash gameplay and dungeon crawling in a colorful fantasy world. The combat enables you to take on goblins and werewolves, but Stories is more than just sword-based action. It also has a world that will change depending on the actions you take and the choices you pursue with its characters.

PlayStation 3

Hyper Void

Hyper Void is a modern take on the classic space-shooter. Players must guide their ship through a wormhole while taking on waves of incoming enemies. If that sounds familiar, that’s because Hyper Void borrows heavily from Tempest while upgrading the visuals.

Tiny Troopers Joint Ops

Tiny Troopers is arcade shooter reminiscent of retro games like Smash TV. With a variety of weapons, players must eliminate infantry, tanks, and other opposing forces.

PS Vita

Color Guardians

A challenging platformer that features a color-shifting mechanic. The game has you controlling a Guardian who must change their color to absorb a rainbow of different obstacles. It’s a simple idea that seems like it could get difficult quickly.

VVVVVV

Finally, Vita PS Plus members are getting the VVVVVV platformer from developer Terry Cavanagh, who is best known for Super Hexagon. VVVVVV features simple, pre-NES-era visuals and a core gameplay element where players can switch gravity at will. This enables you to navigate puzzles that are otherwise impossible to overcome with basic running and jumping.