Games

My random suggestions right now for stuff I like and is played with mouse would be:

• Rimworld. Almost any top-down PC management or (not too fast paced) strategy game should work, but, I really like the crazy random shit that happens to the characters you're slowly getting to know in Rimworld.

• Almost any of the Zachtronics games, if you like to torture your brain. Open-ended sort-of-engineering puzzles.The bigs ones like Spacechem, Opus Magnum and Shenzhen IO in particular, last call BBS for a bit more variety inside one game. Not Infinifactory, since while it doesn't have any kind of fast paced action it still requires navigating in 3D so mouse only wouldn't work.

Slay the spire

Buy a mouse with a joystick or D-Pad on it. Or one of those 15 button mice meant for MMOs. Then you can play anything.

Stardew valley with the mouse move mod /hj

Or bloons tower defence :3.. I've gotten a lot of gaming hours out of btd5

Recently did another Plants vs. Zombies run, so I'm gonna throw this one into the mix here.

You did say "just right hand," there was a thread before asking for one-handed games in general

If you don't mind something older, both Star Wars Knights of The Old Republic games can be played only with mouse. It's bit clunkier than also using a keyboard, but doable. I used to play them like that while smoking many years ago.

Peggle Deluxe and Peggle Nights are awesome mouse-only (except typing name i think) casual games!

https://store.steampowered.com/bundle/15495/Peggle_Pack/

Cookie Clicker

Age of Empires, XCOM, Cities: Skylines, Divinity Original Sin 2, Starcraft, +1 for OSRS.

I'd say most RTS games I can think of can be played with just a mouse

Older diablo-like ARPGs didn't really rely on the keyboard too much IIRC, the modern ones do tend to rely on the keyboard a bit more

If you don't mind older games, basically the whole genre of point and click adventures is this by definition

Warcraft? Sid Meier's civilization?

Or in general any top down RPG game, like RuneScape.

Nubby's Number Factory

Uow about some visual novel style games like 999, Hotel Dusk (DS emulator), Ghost Trick, Professor Layton (DS emulator or mobile)

kentucky route zero

If you want an alternative to Slay the Spire i can recommend Monster Train; you mainly summon different Hellspawn and cast spells, which gives it more of an Magic the Gathering feel.

If you want an ARPG fix and have thumb buttons on your mouse you can try Chronicon, don't let the gfx stop you, it's an excellent hack&slash game, and you can put all your skills onto 1 button if you like - i use the middle and the right button for most builds and thumb keys for pots

If you want a new spin on Darkest Dungeon, give Iratus - Lord of the Dead a try. Or if you played a lot of Darkest Dungeon and want more of it, try Black Reliquary, a huge (and free!) mod with a lot of new mechanics!

Going into the same direction as Into the Breach is Shotgun King - the final Checkmate. It's really fun and the higher difficulties really make your brains work out. Workshop support with lots of extra content included! Also great for Turn-based Tactics is Invisible Inc., putting you in control of an spy agency which has been hit hard and tries to recover.

For arcade games i can recommend Utopia must fall - it really captures the spirit of old arcade games, but feels real fresh. You can also go for Nova Drift, which is also an excellent arcade game.

Then there is Cultist Simulator and its spiritual successor, Book of Hours. It's basically a card based riddle game, and very atmospheric.

There is always Shattered Pixel Dungeon - it is also available on Steam or Gog, but you can download and play it for free from the link i provided.

I think your collarbone might have healed until you've finished that list, have fun!

Get a giant D-pad for one of your feet to use for wasd

Give Kingdom of Loathing a try.

Peggle, Nubby's Number Factory, Peglin, Ballionaire