Thank you! Yeah the Yak “Mooooooo” sound is “random” between 1.5 seconds and 6.5 seconds, cranking it up might help.
The theme is a little of a gamble because things really go down the more you travel through spaces. There are a few more tasks than just refueling the spaceship :) And if the game crashes mid-way then it is a clear issue! Do you know what went wrong? Could you try to replicate the bug?