Heroes & Castles The Modern Combat series Nova series Combat Monsters Skulls of the Shogun Heck, Words with friends! And too many others to count What kind of multiplayer game are you looking for? FPS? RTS? TBS?
I love playing "Are you smarter than a 5th grader?". It's free, but you have to wait for timers. You get to play 3 rounds, but then you must wait an hour or so for your bar to fill up and play another 3 rounds. But three round intervals are all you really need anyway, takes about 10 minutes to complete. You compete with real people. It feels so good to kick their butts. It gets really competitive.I don't usually like multiplayer games because I don't like to compete, but with that game I'm absolutely obsessed and get a little disappointed with myself if I lose a round. I urge you to give it a go. It's only available on the US AppStore I think.. There's also another multiplayer trivia game relating to "who wants to be a millionaire" on the US AppStore as well, but I haven't played it yet, but I assume they're similar.. Though millionaire is more about pop culture and sports and stuff, where are 5th grader is more math/school related, and likely something you've actually learnt before, which makes it more fun.
If you're looking for a trivia game that gives you local competitive play, check out the free "What D'Ya Know?" app.
I'd advise staying away from most f2p models, yes you can play it free but eventually you will get to a point where you either pay or fall behind/wait etc.. I played clash of clans for about a month spent about 10$ and guess where it is now deleted off my IPod never to return. So ya I wasted ten bucks... It got to a point where the "good" players were so far out of my league it wasn't possible for me to enjoy the game without spending a fortune. With that said lets get back to the topic at hand ,I will give you some good maybe even great? games of all genres with fantastic multiplayer(some of the games I'm mentioning have multiple sequels and version etc... So keep that in mind) Lets start with RTS (These games are unfortunately quite sparse on the App Store, there isn't anything as epic as Starcraft or anything but there are still a few good ones.) There's a pretty large group of games with fast multiplayer combat all based around the same concept. These games include.. Galcon Tentacle wars Auralax Modern Combat Euphloria Hills and Rivers remain Supremacy Wars All of the aboVe games consist of rapid movement of your forces/troops/ships whatever to diff places in an attempt to conquer your opponent. Now here are a few (and I mean few) games that are a bit more fleshed out in RTS(like more Starcraftish) and those games are Autumn Dynasty , Warfare Incorporated , Castle Raid and Dungeon Defenders(although DD features more aspects of tower Defense and RPG ) [* I'm also throwing Osmos in here just because it doesn't really fit anywhere else) Ok now lets get into possibly the biggest of the multiplayer games.. TBS! Ok there are a ton of Turn based strategy games out there, I will try to name the best of the best. XCom: Enemy Unkown Raven Mark : Scourge of Estilion Hero Academy Great Big War Game Outwitters Highborn European war Starbase Orion Skulls of the Shogun New World Colony Crimson: Steam Pirates Fingershot RPG Hunters Ok that covers some the better ones, still there are plenty more. Next we'll talk about Fighting/Sports/Racing/(fp)Shooter Multiplayer games. I'm grouping these together because they're all very action oriented and generally heavy in the Graphics department(but not always) FIGHTING - Street Fighter 4 Volt The King of Fighters i - 2012 Soul Calibur Street fighter vs Tekken Marvel vs Capcom 2 Ultimate Mortal Kombat 3 Real Steel world Robot boxing Real Boxing Fight Night Champion FPS - Archetype N.O.V.A Modern Combat Call of duty : black ops Trigger fist Star Warfare Six Guns Mass effect infiltratior Tom Clany Rainbow Six Shadow Vanguard RACING- Need for Speed Sonic &Sega all Star Racing Real Racing Asphalt Motoheroz Slingshot Racing Reckless Racing Mini Motor Racing Vs. Racing Mad skills BMX Riptide GP(2) Draw race 2 Sports - NBA JAM Super Stickman Golf Dream Leage Soccer Slide Soccer Soctics Virtual Table Tennis Real Soccer 2012 Ice Rage Glow Hockey Tiger Woods PGA tour 2012 Homerun Battle 2 Flick Home Run! Wrestle Jump Stickman Tennis 9 innings pro baseball NHL 2k11 Ok now lets move on to Card/Board game multiplayer Words With Friends Ticket to Ride Dice with Buddies Catan Carcasonne Empires World Conquest Agricola Olo game Stone Age Bang! Pathogen Neuroshima Hex San Juan Ascension : Chronicle of the gods layer Le Havre D&D Lords of Waterdeep Evil Apples Shadow era (Dark Prophecies) Empire- the deck building game Lux Tichu King of Opera Fresh Deck Poker Ok, and finally I have a few more that don't really fit into any specific category... Eenies online Sorcery Craft Mirrors edge Swing Shot Worms Quiz up Call of Snakes Disc Drivin Bloop Ring Fling Well that's about all for my list, I know I left out some good ones but hopefully I covered enough of them. Hope it helps..