From Astro Wars
|An artifact gives a bonus to a specific area of development on all your planets. Artifacts you own appear in the Trade Screen, where they can be enabled or disabled at any time. They can be bought or sold, and can be randomly found by defeating an unknown planet. You can only use one artifact at a time but may own as many as you wish. Each type is made available for purchase at each Player Level update in the order shown in the table.
- At Player Level 8, new Artifacts available will be '(Artifact) 2' and give a 20% bonus, instead of the 10% bonus for '(Artifact) 1'.
- At Player Level 15, the new Artifacts will be "(Artifact) 3" and worth a bonus of 30%.
- Once Player Level 21 is achieved, no new Artifacts are available for purchase.