Fedora Spade Episode 2 introduces a larger cast of characters to converse with and interrogate, as you attempt to solve the latest crime mystery with your sleuthing skills and persuasive charms. You're not alone in this adventure though, as a partner will tag along to provide even more humor if not some assistance.

Use the Z key to confirm choices or press the X key to cancel a selection. Playable in windowed mode only.

In Torus Trooper, you pilot a ship through a tunnel chasing after other enemy pilots in a race against time. Every level is split into two sections, and progress can only be made after defeating a number of ships and one mid-level boss.

As mentioned earlier, there's a strict time limit and the only way to replenish it is by defeating bosses or reaching certain scores. It's a good idea to keep pressing the up arrow key to accelerate, because your shot strength increases as you go faster.

Enemy bullets might seem a little difficult to dodge compared to other Kenta Cho's efforts, but this is where he tops himself again. You can slow down with nice grinding effects by pressing the X key. Holding down this button actually charges your special shot that can be unleashed to absorb harmful projectiles, destroy enemy ships in it's path and gain more bonuses as well.

In Opera Omnia you play a state historian who is charged by his politician friend to come up with convenient theories about migration in the past. Basically, you have to think backwards: if people were in this city during a plague, and if plagues reduce population, that means that they had to have had a lot of people in order to survive that plague: thus, plagues actually increase population if you work backwards in time.

The challenge of each level is that you're given something to prove -- such as prove that 300,000 people lived in this city a long time ago -- and you adjust migration patterns that will show how 300,000 people could have lived in that city a long time ago.

The gameplay may be a bit hard to "get" at first, and a lot of the people I've recommended the game to had a hard time wrapping their mind around the concept, but if you do manage to do it you'll find it a clever gameplay mechanic and some interesting challenges unlike most other games. There's also a pretty well-written story over the span of its 20 levels. - Paul Eres

The lovable rodent from Pixeljam's original maze adventure returns for another go at navigating a dastardly tricky labyrinth in Ratmaze 2, on a quest to nibble down every single piece of cheese or edible material it could sink it's teeth into.

The first maze is made playable in this version as well, and a scroll mode can now be activated for a clearer view of the rat's surroundings. Expect to encounter puzzles such as those that requires pushing objects into certain areas or finding false walls to uncover hidden passages.

In Entanglement your goal is to place hexagon tiles so as to create the longest line possible without running into a wall. The more segments your line has, the higher the score you can achieve.

Use the arrow keys or the mouse scroll-wheel to rotate your tile. Click with the mouse or press the spacebar to place your tile and watch your line grow. Once you have placed as many tiles as you are able, your game will end.

Blocksum is a puzzler with simple rules but addictive gameplay. Join a number of tiles together by using the Z key, and their corresponding number increases. Gather a large group of blocks with the same number to make them disappear. Grey orbs can be used to remove all blocks with the same number on the field simply by connecting it to a tile.

Hold the X key to move the tiles upward. Press the C key to access a pause menu. Requires the latest DirectX version to run.

Puzzle veterans will love the possibilites of chaining up combos with this one. Highly recommended.

Virtual Silence is an action game where the player takes control of a young boy named Jason, who has to sit through a series of experimental tests in a virtual world under the watchful eyes of his caring mother and an unnamed doctor. Use the cursor keys to move, and hold the X key to shoot. Press the Z key to change the scenery, and tap the enter key to skip dialogue. The game has multiple endings.

Hoshi Saga is a brain teaser consisting of thirty-six stages in total, each with the same objective of discovering stars which are cleverly hidden by the author. No instructions are given, and players are expected to solve puzzles by experimenting with the elements found in every stage.

Think Under Defeat, but with 2D sprites. Demolition Gunner: In Search and Destroy was originally developed for a three minute gameplay competition, then turned into a complete production featuring seven stages and obligatory boss encounters.

These battles last only twenty seconds each, so there won't be much of a struggle beating them assuming that you're good at dodging an insane number of bullets. Press the Z key to shoot, or hold the X key for a few seconds before releasing the button to launch a napalm bomb. Click on the first link after the title to download.

Hoshi Saga 3 is a new collection of puzzles designed by Yoshio Ishii, where the objective of the game is to search for stars hidden in each of the thirty levels included. Practically no instructions are given, and players are expected to solve puzzles by experimenting with random elements found in every stage.