Deeeep.io vs Oinky Tonk
Deeeep.io
Deeeep.io is a really unique IO game which features a different sort of progression system while retaining the competitive aspect of all games within the new genre. In this game, there are many animal characters for you to play as, each of which has their own unique range of abilities. However, unlike most games, you can't choose the animals you play - You get to work your way up the food chain instead. If you do really well, you may end up being the whales, orcas, and sharks a.k.a. the top predators in that stretch of the sea.The game even has plenty of fun places to explore, and sometimes even hide in, just to avoid larger predators. Some animal characters, such as penguins and seagulls, even allow you to head up to the surface so you can battle other players there as well.
Deeeep.io isn't exactly like your conventional IO game. In fact, similar to Starve.io, it is part of a wave of innovative games which retained the sort of gameplay simplicity that can only be associated to IO games and yet provide players with a myriad of interesting games and game modes to play in.
If you do plan on giving this game a try, you might want to play the browser version instead. As reported by many players, the mobile version of the game has a lot of glitches.
Oinky Tonk
Oinky Tonk is a casual game where you get to spin a wheel to decide whether you can attack another player, build your island, or plunder others' islands for money to fund the construction/decoration efforts for your island. There are, naturally, many islands that you will be able to progress to and eventually own.However, you can, in turn, be attacked (destroying some of the stuff you've built) and plundered (lose your cache of cash) as well so it would be wise to have shields on at all times. You can perform retaliatory attacks, thankfully, but this only works if your enemy doesn't have a shield on, obviously.
Generally, this game's gameplay is pretty similar to Pirate Kings and many other casual "Spin the Wheel"-type games, including its adorable graphics and fancy animation effects, and hence, Oinky Tonk would serve as a great alternative game to play.