Index: binaries/data/config/default.cfg
===================================================================
--- binaries/data/config/default.cfg
+++ binaries/data/config/default.cfg
@@ -374,6 +374,7 @@
 rankabovestatusbar = true         ; Show rank icons above status bars
 experiencestatusbar = true        ; Show an experience status bar above each selected unit
 respoptooltipsort = 0             ; Sorting players in the resources and population tooltip by value (0 - no sort, -1 - ascending, 1 - descending)
+maxselectionsize = 200            ; How many entities one can select at the same time.
 
 [gui.session.minimap]
 blinkduration = 1.7               ; The blink duration while pinging
Index: binaries/data/mods/public/gui/session/selection.js
===================================================================
--- binaries/data/mods/public/gui/session/selection.js
+++ binaries/data/mods/public/gui/session/selection.js
@@ -1,5 +1,5 @@
 // Limits selection size
-var g_MaxSelectionSize = 200;
+var g_MaxSelectionSize = Math.round(Engine.ConfigDB_GetValue("user", "gui.session.maxselectionsize"));
 
 // Alpha value of hovered/mouseover/highlighted selection overlays
 // (should probably be greater than always visible alpha value,