multi-platform emulator, including NES, GB/A, Lynx, PC Engine

mednafen

multi-platform emulator, including NES, GB/A, Lynx, PC Engine

Mednafen is a command-line driven emulator for many different systems. It has full support for OpenGL and SDL graphics, network play, remappable input configuration, joystick and keyboard support, save states, game rewinding, GSF playback, and screenshots.
Shoot around obstacles to collect energy using your beam.

mirrormagic

Shoot around obstacles to collect energy using your beam.

A game like "Deflektor" (C 64) or "Mindbender" (Amiga). The goal is to work out how to get around obstacles to shoot energy containers with your beam, enabling the path to the next level to be opened. Included are many levels known from the games "Deflektor" and "Mindbender".
Low latency encrypted VoIP client

mumble

Low latency encrypted VoIP client

Mumble is a low-latency, high quality voice chat program for gaming. It features noise suppression, encrypted connections for both voice and instant messaging, automatic gain control and low latency audio with support for multiple audio standards. Mumble includes an in-game overlay compatible with most open-source and commercial 3D applications. Mumble is just a client and uses a non-standard protocol. You will need a dedicated server to talk to other users. Server functionality is provided by the package "mumble-server".
help the frog cross the street

pixfrogger

help the frog cross the street

PiX Frogger is a clone of the classic game Frogger, in which you must help a frog cross the street to avoid becoming roadkill by cars and trucks. The frog starts at the bottom of the screen and the only control the player has is navigating the direction for the frog to hop. The game allows 4 players playing simultaneously with the keyboard.

python-pyglet

cross-platform windowing and multimedia library (Python 2)

This library provides an object-oriented programming interface for developing games and other visually-rich applications with Python. pyglet has virtually no external dependencies. For most applications and game requirements, pyglet needs nothing else besides Python, simplifying distribution and installation. It also handles multiple windows and fully aware of multi-monitor setups.
chess database with play and training functionality

scid

chess database with play and training functionality

Shane's Chess Information Database is a chess database application with a graphical user interface. You can browse databases of chess games, edit them and search for games by various criteria. Scid uses its own compact and fast database format, but can convert to and from PGN. Its also possible to play live on the internet and practice tactical knowledge.