1 files changed, 7 insertions, 1 deletions
diff --git a/rules.js b/rules.js
index a331a05..39df702 100644
--- a/rules.js
+++ b/rules.js
@@ -266,7 +266,9 @@ const states = {};
 let game = null;
 
 function random(n) {
-	return Math.floor(((game.seed = game.seed * 48271 % 0x7fffffff) / 0x7fffffff) * n);
+	if (game.rng === 1)
+		return Math.floor(((game.seed = game.seed * 48271 % 0x7fffffff) / 0x7fffffff) * n);
+	return (game.seed = game.seed * 200105 % 34359738337) % n
 }
 
 function log(...args) {
@@ -2878,6 +2880,10 @@ exports.setup = function (seed, scenario, options) {
 		undo: [],
 	};
 
+	// Old RNG for ancient replays
+	if (options.rng)
+		game.rng = options.rng
+
 	if (scenario === "Fortress Tripoli")
 		game.fortress = 1;