diff --git a/lua.cpp b/lua.cpp
index 5828861..16a3f3a 100644
--- a/lua.cpp
+++ b/lua.cpp
@@ -699,6 +699,17 @@ extern "C" {
         return 1;
     }
 
+    static uint32_t chrono_time = 0;
+    static int cpp_sys_chrono(lua_State *L) {
+        if (lua_gettop(L) == 0) {
+            lua_pushnumber(L, float(SDL_GetTicks()-chrono_time)/1000.0f);
+            return 1;
+        } else {
+            chrono_time = SDL_GetTicks();
+            return 0;
+        }
+    }
+
     static int cpp_sys_beat(lua_State *L) {
         if (lua_gettop(L) == 0) {
             lua_pushboolean(L, beat(-1));
@@ -1049,6 +1060,7 @@ void push_lua_funcs() {
     lua_newtable(L);
     lua_pushcfunction(L,cpp_sys_delta);             lua_setfield(L, -2, "delta");
     lua_pushcfunction(L,cpp_sys_time);              lua_setfield(L, -2, "time");
+    lua_pushcfunction(L,cpp_sys_chrono);            lua_setfield(L, -2, "chrono");
     lua_pushcfunction(L,cpp_sys_beat);              lua_setfield(L, -2, "beat");
     lua_pushcfunction(L,cpp_sys_update);            lua_setfield(L, -2, "update");
     lua_pushcfunction(L,cpp_sys_dir);               lua_setfield(L, -2, "dir");
diff --git a/vscode/library.lua b/vscode/library.lua
index 8fa630c..c124b9f 100644
--- a/vscode/library.lua
+++ b/vscode/library.lua
@@ -404,6 +404,13 @@ function sys.delta() end
 ---Get current system timer in seconds (with decimals)
 function sys.time() end
 
+---@param offset number
+---Reset chrono time (with offset in seconds) (with decimals)
+function sys.chrono(offset) end
+
+---Get chrono time since last chrono reset in seconds (with decimals)
+function sys.chrono() end
+
 ---@return boolean
 ---Query if a beat has already passed
 function sys.beat() end