Frontline Protocol

Frontline Protocol is an RTS with deckbuilding and auto battler elements, entirely focused on cooperative PvE gameplay. You'll dive into a tactically rich card system: draw simultaneously from three freely selectable decks, rewarding specialization, deck planning, and player experience – and allowing you to precisely control each frontline.

Whether playing solo or in online co-op with up to three other players – every battle brings new challenges. You’ll share resources, spawners, and economy buildings. Players can choose to focus on specific roles, such as economy, defense, support, or aggressive line control with light infantry. Communication and timing are key – because what one player builds benefits the whole team.

As you progress through the game, you’ll earn Booster Credits, which can be used to purchase new card packs. These packs include new cards, temporary bonuses, and resources to further develop your decks. Certain cards can also be permanently upgraded once, reducing their deployment cost – creating long-term strategic depth instead of short-term optimization.

Each level-up grants you a skill point, which can be freely invested in passive bonuses – such as increased starting resources, a larger deck hand, or improved resource rates. Alongside card selection, this builds a growing meta-progression system that deepens your playstyle over time.

Experienced players can take on missions – randomly generated mini-campaigns with unique challenges. Completing them earns Mission Coins, which unlock special booster packs. These contain tactical plans, booster items, and other rewards that can be strategically used to optimize your loot.

With over 300 cards for units, buildings, towers, and special actions, you'll have everything you need to develop the playstyle that suits you best.