diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5c9478e..c41da20 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,7 @@ Games:
 - [Rising World](https://store.steampowered.com/app/324080/Rising_World/) support.
 - [ATLAS](https://store.steampowered.com/app/834910/ATLAS/) support.
 - [America's Army: Proving Grounds](https://store.steampowered.com/app/203290/Americas_Army_Proving_Grounds/) support.
+- [Base Defense](https://store.steampowered.com/app/632730/Base_Defense/) support.
 - Added a valve protocol query example.
 - Made all of Just Cause 2: Multiplayer Response and Player fields public.
 
diff --git a/GAMES.md b/GAMES.md
index 7c43258..5331c8d 100644
--- a/GAMES.md
+++ b/GAMES.md
@@ -77,6 +77,7 @@ Beware of the `Notes` column, as it contains information about query port offset
 | Rising World                       | RISINGWORLD         | Valve                | Query port offset: -1                                                                                                                                                     |
 | ATLAS                              | ATLAS               | Valve                | Query port offset: 51800                                                                                                                                                  |
 | America's Army: Proving Grounds    | AAPG                | Valve                | Query port: 27020. Does not respond to the rules query.                                                                                                                   |
+| Base Defense                       | BASEDEFENSE         | Valve                | Query port: 27015. Does not respond to the rules query.                                                                                                                   |
 
 ## Planned to add support:
 _
diff --git a/crates/lib/src/games/definitions.rs b/crates/lib/src/games/definitions.rs
index 6272e81..284cb5d 100644
--- a/crates/lib/src/games/definitions.rs
+++ b/crates/lib/src/games/definitions.rs
@@ -52,6 +52,11 @@ pub static GAMES: Map<&'static str, Game> = phf_map! {
     "atlas" => game!("ATLAS", 57561, Protocol::Valve(Engine::new(834_910))),
     "avorion" => game!("Avorion", 27020, Protocol::Valve(Engine::new(445_220))),
     "barotrauma" => game!("Barotrauma", 27016, Protocol::Valve(Engine::new(602_960))),
+    "basedefense" => game!("Base Defense", 27015, Protocol::Valve(Engine::new(632_730)), GatheringSettings {
+        players: true,
+        rules: false,
+        check_app_id: true,
+    }.into_extra()),
     "battalion1944" => game!("Battalion 1944", 7780, Protocol::Valve(Engine::new(489_940))),
     "brainbread2" => game!("BrainBread 2", 27015, Protocol::Valve(Engine::new(346_330))),
     "battlefield1942" => game!("Battlefield 1942", 23000, Protocol::Gamespy(GameSpyVersion::One)),
diff --git a/crates/lib/src/games/valve.rs b/crates/lib/src/games/valve.rs
index d6ac1e0..18c718c 100644
--- a/crates/lib/src/games/valve.rs
+++ b/crates/lib/src/games/valve.rs
@@ -8,6 +8,7 @@ game_query_mod!(
     Engine::new(33930),
     2304
 );
+game_query_mod!(basedefense, "Base Defense", Engine::new(632_730), 27015);
 game_query_mod!(alienswarm, "Alien Swarm", Engine::new(630), 27015);
 game_query_mod!(aoc, "Age of Chivalry", Engine::new(17510), 27015);
 game_query_mod!(