What is Expanding Land?

Expanding Land is a free, high-performance multiplayer IO game built from scratch in pure C. It supports up to 3840 real players simultaneously with zero bots. The game features a resizable map that dynamically grows with the player base, 200+ spectator slots, encrypted WSS/TLS connections, anti-cheat protection, and ultra-low latency (~5ms tick time vs 40ms on typical Node.js servers).

How do I play Expanding Land?

Visit expanding.land in any modern web browser (Chrome, Firefox, Edge, Opera, Brave). No download or registration required. Enter a nickname and click Play. Use your mouse to move, Space to split, W to eject mass. Eat food and smaller players to grow. Reach the top of the leaderboard!

What makes Expanding Land different from other IO games?

Expanding Land stands out with: (1) Pure C server engine achieving ~5ms tick time — 8x faster than Node.js servers; (2) 3840 real players, zero bots — every cell is a real human; (3) Resizable map that automatically grows or shrinks based on active players; (4) Encrypted WSS/TLS connections for security; (5) Anti-cheat coordinate scrambling; (6) Session stats showing time alive, highest mass, food eaten, and players eaten.

Does Expanding Land have an anti-teaming system?

Yes. Expanding Land uses an exponential multiplier-based anti-teaming system ported from Delta Server. Each player has a single decay multiplier — teaming actions (splits, W presses, virus pops, danger zone) increase the multiplier, and it naturally decreases over time via a compensation constant. The effective decay is calculated as base_decay × pow(1.086, multiplier), making the penalty grow exponentially with repeated teaming while barely affecting normal solo play.

What features does Expanding Land have?

Key features include: 3840 real players per server, resizable dynamic map, 200+ spectator slots, full leaderboard, custom skins from Legend Mod, ghost cells on death, in-game chat, spectator mode with free-roam, session stats (time alive, highest mass, food eaten, players eaten), encrypted connections, anti-cheat protection, and compatibility with Legend Mod and Delta extensions.

Is Expanding Land compatible with mods?

Yes! Expanding Land is fully compatible with OGario-based mods including Legend Mod and Delta. Players can use custom skins, themes, and extended features through these browser extensions. Visit legendmod.ml or deltio.pages.dev to get the mods.

Expanding Land – Help, Game Guide & Documentation for the Free IO Game with 3840 Real Players

Expanding Land – Help & Game Guide

Expanding Land is a free, high-performance multiplayer IO game with 3840 real players and zero bots. Built from scratch in pure C for ultra-low latency.

🎮 Game Features

3840 Real Players — No bots allowed, every cell is a real human
Resizable Map (0.25x to 8x) — Dynamically grows and shrinks with the player base
200+ Spectator Slots — Watch the action live
Ultra-Low Latency — ~5ms tick time (8x faster than Node.js servers)
Encrypted Connections — WSS/TLS for security
Anti-Cheat Protection — Coordinate scrambling per player
Custom Skins — Full skin support via Legend Mod
Session Stats — Time alive, highest mass, food eaten, players eaten
In-Game Chat — Communicate with other players
Leaderboard — Compete for the #1 spot
Ghost Cells — See where you died
Spectator Mode — Free-roam spectating

🕹️ How to Play

Visit expanding.land in your browser
Enter a nickname and click Play
Move with your mouse, eat food and smaller players to grow
Press Space to split, W to eject mass
Climb the leaderboard and dominate!

🔗 Compatible Mods

Legend Mod — Custom skins, themes, and enhanced features
Delta Mod — Advanced IO game client extension
Agar2 — Feature-rich IO game client

📊 Performance

Built from scratch in pure C — achieves ~5ms tick time at 400+ players (compared to ~40ms for Node.js servers). Server located in Nuremberg, Germany for optimal EU latency with encrypted WSS/TLS connections.

▶ Play Now — Free

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