diff --git a/right_coin.lua b/right_coin.lua
index ec84f9e..789d8db 100644
--- a/right_coin.lua
+++ b/right_coin.lua
@@ -13,11 +13,11 @@ mh=h/s
 GameState = { start=0, game=1, gameover=2, market=3 }
 currentState = GameState.game
 life=100
-coinBlue=5
+coinBlue=0
 valueBlue=1.0
-coinRed=2
+coinRed=0
 valueRed=5.0
-coinYellow=21
+coinYellow=0
 valueYellow=0.8
 MarketOptions = { blue=0, red=1, yellow=2, all=3, done=4 }
 marketSelection = MarketOptions.blue
@@ -438,6 +438,13 @@ function updateGame()
 	if coinTimer == 0 then addRandomCoin() end
 	p:direct()
 	p:update()
+
+	-- Coin market
+	valueBlue=math.floor((math.sin(t/100)+1)*10)/10
+	if t%60 == 0 then
+		valueRed=math.random(0,99)/10
+	end
+	valueYellow=0.1*coinYellow*coinYellow
 end
 
 function updateMarket()