CSCases

Cases are defined in datapack JSON files, so a server owner can add, edit or rebrand cases in a single world or on a dedicated server without recompiling the mod or repackaging it. Each case lists weighted rewards across five rarity tiers, colored in the familiar CS scheme from Mil-Spec blue through Restricted purple, Classified pink and Covert red to Rare Special gold. Tier weights are normalised, so positive numbers of any size work and a weight of 1 and 99 gives the same 1 percent odds.

Each reward is a genuine item stack, so its count, enchantments, display name, lore, attribute modifiers, leather dye color, or any other registered data component can all be set. A wrong-key check binds each key to specific cases through a data component, and using a key on a case it does not fit shows a message in the action bar without consuming the key.

The mod is NeoForge only and runs on client and server, so a dedicated server pushes its full case registry to each client on join, and players see exactly what the server loaded with no client-side setup. It works in single-player and multiplayer, and an in-game config screen sits in the Mods menu. A Grab Case creative tab lists one Case and one Case Key for each loaded case, and the full datapack format reference, including supported fields and validation rules, lives in docs/datapack-cases.md in the source.