caveexpress software package provides 2D platformer with physics-based gameplay, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install caveexpress
caveexpress is installed in your system.
Make ensure the caveexpress package were installed using the commands given below,
$ sudo dpkg-query -l | grep caveexpress *
You will get with caveexpress package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Games |
| Package | caveexpress |
| Version | 2.4+git20160609-2 |
| Description | 2D platformer with physics-based gameplay |
| Sub Section | Games |