Sayonara is a small, clear and fast audio player for Linux written in C++, supported by the Qt framework. It uses GStreamer as audio backend.
Медиа Плаиер Цлассиц
Media Player Classic Home Cinema (mpc-hc) is considered by many to be the quintessential media player for the Windows desktop. Media Player Classic Qute Theater (mpc-qt) aims to reproduce most of the interface and functionality of mpc-hc while using libmpv to play video instead of DirectShow.
Gnome Connections
A remote desktop client for the GNOME desktop environment
QMPlay2
QMPlay2 is a video and audio player. It can play all formats supported by FFmpeg, libmodplug (including J2B and SFX). It also supports Audio CD, raw files, Rayman 2 music and chiptunes. It contains YouTube and MyFreeMP3 browser.
кофеин
Кафеин је медијски плејер. Оно што га чини другачијим од осталих је одлична подршка за дигиталну ТВ (ДВБ). Каффеине има интерфејс прилагођен кориснику, тако да чак и први пут корисници могу одмах да почну да пуштају своје филмове: са ДВД-а (укључујући ДВД меније, наслове, поглавља, итд.), ВЦД-а или датотеке.
Харуна
Haruna is an open source video player built with Qt/QML on top of libmpv.
Прагха
Pragha is a Lightweight Music Player for GNU/Linux, based on Gtk, sqlite, and completely written in C, constructed to be fast, light, and simultaneously tries to be complete without obstructing the daily work. 
Видеос
Also known as Totem, Videos is a movie player designed for GNOME.
GMusicBrowser
A customizable open-source jukebox for large collections
КБлоцкс
KBlocks is the classic falling blocks game. The idea is to stack the falling blocks to create horizontal lines without any gaps. When a line is completed it is removed, and more space is available in the play area. When there is not enough space for blocks to fall, the game is over.