Excellent game, very well done. Here are some suggestions for improvement... Add a museum assist feature when you are replacing an artefact that shows you how your museum bonuses will change. At a certain vip level this feature can be upgraded so that you can toggle seeing the bonus changes when the artefacts are at max level in addition to using the feature in the artefact crafting screen so you can decide if an artefact is worth keeping. The basic assist is for everyone, the advanced for vip.