The Drifters Loot the Galaxy team is giving away multiple goodies on their website for free. You can sign up to their newsletter to get 1000 Zenith and a skin ($10 value) plus you can score exclusive skins!
Instructions
1. Go to https://gleam.io/siNie/drifters-loot-the-galaxy-ziggy-giggler-skin to unlock a Skin!
2. Go to https://gleam.io/zeang/drifters-loot-the-galaxy-halley-stone-faced-skin to unlock another skin.
3. Go to https://www.driftersthegame.com, scroll down and sign up to unlock 1000 Zenith.