Pictar.io is described as 'free multiplayer draw and guess game with unique gamemodes right in your browser!' and is a Digital Painting Tool in the Games category. There are more than 10 games similar to Pictar.io for Online / Web-based, Android, iPhone, iPad and Android Tablet. The best alternative is skribbl, which is free. Other Pictar.io like games are gartic.io (Free), Draw Something! (Freemium), Drawasaurus (Free) and Drawize - Draw and Guess (Free).
Drawasaurus is a drawing & guessing game for your phone and PC. Do your best to draw the word you are given while players from around the world try to guess it! •Avoid drawing words and letters. •Be polite and have fun!
Multiplayer online drawing game where you can guess what others are drawing and then draw for the others as well. There are Themed rooms - Each room has its own theme, words and drawings should respect the theme.