Recs.
Updated
Construct 2 is a simple little 2D game development program. It works well for making very simple games.
SpecsUpdate
Pros
Pro Very easy to learn
It has an easy drag and drop interface were you can drag an image from your computer directly into construct 2 to import it. After you import something you can easily add atributes to it; such as platformer which lets you control the object with your arrow keys.
Pro Simplicity - it is made for everybody to use and love
Construct 2 is a tool for not just programmers, but artists as well. You can create a game with only visual coding, which is easy to learn and doesn't require any previous programming knowledge. You can focus on making your game better instead of just coding. It has some limitations of course, but it's definitely worth it.
Pro Active plugin ecosystem
Construct 2 has an active plugin ecosystem providing behaviors and features that smooth the workflow for certain game types.
Pro Export control for all major platforms
All platform exporters are part of the subscription. There are no additional fees and new exporters are added quickly and maintained well. Currently, 15 platforms are supported, including HMTL 5, iOS, Android, Windows, Chrome Store, PhoneGap and Scirra.
Pro In-depth event system
Construct 2's event system allows for deep, detailed control over all aspects of your game. You aren't limited to just a few options. Rather, Scirra has thought of nearly everything in advance with access to any desired parameter of any object all paired with simple and intuitive ways to interact with them.
Your events can be organized with event sheets (that can be included in other sheets), event groups, sub-events, loops, and functions that make the coding portion of your game as efficient as possible. You don't need any programming knowledge, but if you do have some, you'll feel right at home with the freedom C2 offers.
Pro Allow server-less multiplayer game creation
Construct 2 uses WebRTC technology to support it's multiplayer functionality. The nature of the technology allows peer-to-peer connection which does not require game developer to create server side architecture to allow communication between games.
Pro Rapid development
After using a few quick tutorials you can quickly catch on to the event system this program uses and quickly be able to build any type of 2D game you want. You can download a few sprites from google and put together a working level of Mega Man with character movement / animation / enemies / collision detection / scoring / Tile map and AI within about 2 hours.
The built in behaviors are incredible. It's amazing how Construct can simplify the most redundant tasks in game development.
Cons
Con Free version is limited
Construct 2 Free is not licensed for commercial use. It also limits a project to 100 events, along with other technical restrictions.
Con At some point you will have to program in Construct 2
It's very light, but it's there and when you want to do something more complex you start learning how to code and import things like xml files.