Counter-Strike: Source vs Warmerise
Counter-Strike: Source
Counter-Strike: Source is the second installment in the incredibly popular MMOFPS franchise, Counter-Strike. Despite being a rather old game, Counter-Strike: Source still manages to hold its own in this day and age, with some even claming this game is so much better than the more recent Counter-Strike: Global Offensive or CS:GO. Unlike CS:GO, this game doesn't offer buyable skins and the most important thing - the community is definitely not as toxic as those you'd find in the CS:GO servers. Although the game modes can be rather limited, you can easily find some really good new ones in modded servers.So, if you're looking for the Counter-Strike experience without all the hate that most new players will get, this might be a good game to start.
Warmerise
Warmerise , a.k.a. Warmerise Red vs Blue and Warmerise Online, is a primarily team-based MMOFPS game with a nice science fiction/futuristic-themed that may remind a player of Halo. The game provides players with 2 game modes to play, namely Team Deathmatch and Elimination, both of which have a strong emphasis on teamplay. The combat itself is a bit arcade-like since jumping around actually works as a strategy to avoid getting blown to pieces. Players also have a vast arsenal of conventional and unconventional weapons to use in this game, including mines and rocket launchers, in addition to a ton of cosmetics and suit upgrades. You can even pick up the weapons of fallen enemies or allies in the field.Warmerise isn't exactly very newbie-friendly though, since you are expected to figure out most of the controls you need. Thankfully, most of the common FPS hotkeys, like R for Reload, works in this game. However, some of the aspects might need some getting used to, such as the toggle-based scope and the 3-second invulnerability during spawn, and the fact that there is no such thing as friendly fire in this game.
Being a browser-based MMOFPS, the graphics and the gameplay in Warmerise are quite impressive. However, you should know that there aren't a lot of players for you to play with if you happen to NOT be in the US, and if you do connect to the US servers from outside the US, you can definitely expect some ping/latency issues which will impact your gameplay and overall game experience.