Marvel Contest of champions

Marvel: Contest of Champions is a 2014 free-to-play mobile fighting game developed and published by Kabam. It was released on December 10, 2014 for iOS and Android. The fighting game is primarily set in the Marvel Universe.

The game is loosely based on the events of the limited series Contest of Champions.
Players assume the role of a Summoner, tasked by The Collector to build a team of Marvel heroes and villains and pit them against one another in combat. Gameplay is similar to that of Injustice: Gods Among Us and Mortal Kombat X, where the game's fighting arena is rendered in 3D with a 2D plane for the superheroes' movements and actions. New players begin with access to two characters, and can work to access additional characters including Iron Man, Spider-Man, Wolverine, Hulk, Magneto, Ultron, Loki, and Rhino. Each character is upgradable, featuring their own classes, movements, traits, abilities, and special moves.

Gameplay features an energy system that limits the number of quest-based battles in which players can compete. Energy recharges automatically at a set rate over time or players can refill their energy manually. The energy limit is increased when players increase their level. Game items (such as crystals) that impact play may be found in chests as players win battles. In addition to quests, users can battle opponents in the game's "Versus" mode, pitting their champions against those of another player in one-on-one matches or three-on-three limited-time arenas. However, the opponents are A.I.-controlled so it is not an actual real-time player battle. Controversially, Marvel: Contest of Champions requires a persistent Internet connection for both single and multiplayer modes.

Controls are designed for touch, rather than adapting buttons or virtual joysticks. Gameplay includes quick, normal, and heavy attack options, as well as block and dodge. The character can shuffle back or sprint forward, and each hero has three of their own special attacks (unlocked with ranks and stars), as well as unique abilities and a signature ability. Synergy Bonuses reward the player for combining characters who have a unique relationship. For example, combining Black Bolt and Cyclops rewards the entire team with a +10% block proficiency. As stated by Cuz Parry from Kabam, "There is also a combo system that rewards players for mixing up their moves and performing well-timed blocks. The higher the combo, the faster your special attacks regenerate." As characters take and deal damage, a power meter fills which indicates the potential for unique moves. When the player levels-up their characters, more-powerful special attacks are possible but can be used less frequently due to their higher power cost.

Characters can be leveled-up by using ISO-8, Gold and Catalysts, which are all gained when fighting in Story Quests and special events. Class-specific ISO-8 and Catalysts provide heroes of the specified class a bonus. Completing Story Quests provides XP (experience points) and unlocks the ability to add more heroes to the player's roster, to a maximum of five heroes. Higher levels also allow players to save more ISO-8, catalysts and objects.[8] In addition to taking part in a global chat feature, players can also join alliances. Alliances allow chat amongst other members and provide the opportunity to work together to earn alliance points, used to earn its own type of crystal.

Alliances:
Alliances are the groups or parties of the game, which can include up to 30 players and be private or open. Alliances allow players to gain alliance crystals and to access alliance quests. These alliances can be created with 5,000 battle chips or 100 units. Alliances can also take part in Alliance Events, such as "Rank Up", "Duel Skirmish" or "Summoner Advancement", each granting player rewards. Members of an alliance can assist one another in quests, and alliance members are ranked in relation to each other. The alliance leader is able to choose which members become officers, who are able to remove players from their alliance. Recently added to the game are "Alliance Wars", where two alliances can go head-to-head. An upcoming feature, "Bases", will allow an Alliance to fight to defend a part of a Battlerealm they claim as their own.