Kutamo

Supercraft GSB is a backend-as-a-service for multiplayer game developers. It bundles the off-game services every networked game needs into one REST API: player auth (anonymous, email, OAuth), persistent player data, leaderboards, server registry, matchmaking, live config, in-game economy. Built for indie and mid-size studios on Unity, Roblox, Godot, or custom engines. REST-first means any engine that can make HTTPS calls integrates without an SDK lock-in. Native SDKs for major engines are in active development. Free Dev tier: 2,000 MAU + 2,000,000 API calls per month, no credit card. Paid tiers scale with transparent pricing, no per-API-call surprises.

Hiro is a client-server library built on the Nakama game server to rapidly and flexibly add economy, social, and LiveOps features to your game. It is available as a C# library for Unity Engine, a C++ library for Unreal Engine, and a server package that integrates with the game server. Hiro offers a comprehensive suite of battle-tested metagame features that are quick to implement, allowing developers to focus more on the core gameplay experience. Add base and loot table rewards for players to collect; integrate soft or real currency purchases; define stackable and consumable gameplay items; initialize and manage multiple currencies within the game economy. Adapt store bundles and offer walls based on player behavior; personalize various aspects of the player experience through experiments; schedule live events for players to participate in and earn exclusive rewards. Start and schedule timed or scored events with exclusive rewards; enable players to request and share inventory.