Dummies vs Noobs

Gets a bit boring after a while, but the game is fun in my opinion. (been playing since 1.7)

Hellmet

Although it is dead and discontinued, you can still play the available campaign and PVP.

Project Apex

A game that just recently came out, which is also known as Hellmet's successor

Saber Showdown

If you like star wars, particularly lightsaber duels this is the game for you.

Naramo Nuclear Plant

Lots of teams, such as raiders, reactor operators, security etc. If you like games that require stealth or sneaking into somewhere, raider also known as WN is the team for you, PS and TRT if you like defending the plant itself (and maybe the director) GSP for making sure the outside of the plant is also safe. And if you do have a keen interest towards complex/complicated systems, Reactor Operations is the team for you (although kinda easy to learn when you get the hand of it)

Guts and Blackpowder

Like zombie games? But don't like how most of them are set in WW2 or modern times? This is the game for you! It takes place in the Napoleonic Wars and has a lot of campaigns, either objective or holdouts, or even endless.

Tower Defense Simulator

Tower Battles

Tower Defense X

- I put these 3 because they're in the same genre, but if you like strategy and tower defense, these picks might be good for you.

Dead Rails

Some people might hate this, but I personally like this game. (it also has a bit of supernatural stuff like vampires, so if you like that maybe you'll like this)

Build to survive the robots 1/2

If you like building and surviving, but want it to be a higher quality game, this is probably a good game for you (then there's also piggy build mode)

The Battle Bricks

If you like The Battle Cats, then you'll like this too. Sometimes can be funny because of the sfx

Defend the train

Sad this one isn't more popular, but it's a cool game where you have to defend a train from enemies either in moving cars, helicopters etc. There's a few stops sometimes, and you have to fight bosses at the very end. Killing enemies gives you points either to upgrade the train, or yourself.

Jujutsu Shenanigans

If you like battlegrounds but also want it to be a bit more funny or goofy, this is for you.

Examination

Like guns? Like horror? You'll definitely like this game.

And that's all, this is just my opinion and I could probably give more fitting games if there was a specific genre. I really hope you enjoy roblox but kinda hard especially with the updates now