American Christmas
American Christmas is a Mario-Megaman-Sonic inspired 2D platformer. This game aims to recapture that magic feeling you’d get when gaming during a time in the 90's when 2D platformers reigned king in the gaming industry.

Mixed · 36 reviews
61% positive (22 / 36)


























A sandbox survival game, set on life-sized voxel planets with realistic physics with the possibility to shape your own building blocks. From your custom made furniture, walls to vehicle parts. You shape the blocks which can then be used to build buildings, spacecraft and aircraft.
Released
August 20, 2021
Price
Platforms
Windows
Developer
Publisher
Last sync
September 24, 2026
{Undefined} is currently in early access phase, which means not all content described below is already available from the beginning! Please take a look at our roadmap to keep track of our development and see what's already available in the game, what is not and what we are currently working on! You can find our roadmap on our website.
The idea for {Undefined} came, because conventional games provide you with premade building blocks which can then be used to build stuff. But premade blocks always bring limitations. So we created {Undefined} where we provide as little premade objects as possible!
{Undefined} is a sandbox survival game like no other, set on life-sized voxel planets with realistic physics with the possibility to shape your own building blocks. From your custom made furniture, walls, crafting stations to vehicle parts. You shape the blocks which can then be used to build buildings, spacecraft and aircraft. Endless possibilites with as little limitations as possible!
Survive, gather resources and start designing and building!
Life-sized voxel planets with various biomes and climate zones. From high mountains to flat grasslands, from hot deserts to cold arctic environments, you have to survive and use the resources you have!
Unlike in conventional games, in {Undefined} you can shape your own building components! Shape and design your own walls, furniture, machines, vehicle components, statues... you name it! Our Object Designer allows you to carefully design anything you can imagine without any limitations. You can even design functional blocks like lamps and crafting stations!
Use electrical, logic and pipe systems to automate your base!
Of course, after designing your own furniture or building components, you will have to use them! Build the house of your dreams, or spacecraft to fly into space and construct a spacestation up there. The only limit is your imagination!