• an augmented reality ghost hunting game;
• a GPS navigation game;
• a role playing game;
• (last but not least) a fitness game.

When you start the game, first select the time limit of the game. Short games will keep you busy walking or running from one ghost to another with no pauzes, ideal for short sprints and interval training, or for just getting to know the game. Longer games will make you travel some distance between two ghosts so you can use the game more like a long distance training assistant. When you first start playing we advise you to go to the center of an open field from where you can start hunting ghosts in all directions, and then start a Short Game. More advanced players can play in forests, in residential areas, or in rural areas where ghosts might be more difficult to reach.

After you have selected a time limit, the Game Control Screen will appear. From here you can start a game. During the game you can return to this screen to examine your progress. For now, just wait for a GPS fix en then press the "Start Game" button.

The basic gameplay is simple: hold your phone flat to view the map. Use the map to locate ghosts and navigate the area to approach them.

Hold up your phone to open the camera view. The camera view allows you to scan and catch ghosts.

The distance indicator in the camera view turns green when the ghost is close enough for you to catch. When you aim correctly, the reticle will turn green. Press the on-screen 'catch' button (or the trackball/DPAD-center) to try and catch the ghost.

The game has many features for you to explore, including:

• Different ghost types with different behavior
• Extensive Statistics
• Records and Awards
• Hidden Items
• Twitter support

• Arena: Each game is played in a virtual arena. All ghosts will spawn within this arena, and ghosts can never leave the arena. The arena has a circular shape, and is shown as a green circle on the Map View. The size of the arena is determined by its Radius.
• Arena Radius: As your Level increases, so will the Arena Radius for a certain time limit. This means the Arena will get larger, and it will be more difficult to catch all ghosts within the time limit.
• Awards: After certain accomplishments, you will earn a SpecTrek Award. You will receive an Android notification if this happens. Each award consists of a bronze, silver, and gold variant. For instance, you will earn the bronze "Ghost Catcher" award for catching 100 ghosts, the silver variant for catching 250 ghosts. After you have caught a 1000 ghosts, you will be awarded the gold variant. You can examine all the awards you have earned by selecting the Awards item from the Game Control Screen menu.
• Camera View: The Camera View is used when you get close enough to a ghost to make visual contact. You can switch to the Camera View from the Map View by holding the phone up like a camera. In camera mode you can see ghosts within your Spot Range, scan ghosts within your Scan Range, and actually catch ghosts within your Catch Range.
• Game Control Screen: When you select a game length from the Start Screen, you enter the Game Control Screen. Here you can start a new game. You can return to this screen during game play by pressing the 'Back' button from the Map View or Camera View to view all kinds of information about the ongoing game on this screen.
• Ghost Catch Range: Only ghosts within this range can be caught (using the 'Catch' button or the trackball in the Camera View). Your Ghost Catch Range starts at 164 feet (50 meter) at Level 1, and can be increased by investing Skillpoints.
• Ghost Horn: The ghost horn scares away nearby ghosts. This is mostly used to drive away ghosts from inaccessible places, or to herd ghosts together for easier catching. The range of the ghost horn is twice your Spot Range with a maximum of half the Arena Radius. The ghost horn can be activated using the horn button on the Map View.
• Item Catch Range: Items are special and are much more difficult to catch than ghosts. An item can only be caught at a much closer range than ghosts. By investing in your Item Catch Range skill, you can improve this range.
• Item Find Chance: Initially, all items are hidden. You can only find an item when you happen to get close enough to automatically uncover it, in which case the item will appear on the Map View as a question mark. However, if you increase your Item Find Chance skill, you increase the chance that an item is uncovered directly at the start of the game.
• Level: Each Player Profile has a level associated with it. You start at level 1, and if you gain enough experience (by catching ghosts and items) you advance a level. At each new level, you are awarded 5 Skillpoints.
• Long Game: The long game time limit is 45 minutes by default, but this can be changed in the Settings.
• Map View: When you have started a game, and you hold your phone flat like a map, the Map View with all objects projected onto it. Initially the objects will show up as question marks, until you have Scanned them. You can tap scanned items and ghosts to get more information about them. In the Map View, you can activate the ghost horn by pressing the horn button or the trackball.
• Medium Game: The medium game time limit on a medium game is 45 minutes by default, but this can be changed in the Settings.
• Player Profiles: You can use different Player Profiles to separate the settings and achievements of multiple players on a single phone. Player profiles can be manipulated from the Start Screen menu.
• Records: The game tracks your best performance in a number of categories. These Records can be examined by selecting the Records menu item from the Game Control Screen. If you break a record, you will be notified by an Android notification that shows your accomplishment.
• Scan Range: Only objects within this range can be Scanned. Your Scan Range starts at 328 feet (100 meters) at Level 1. You can increase your Scan Range by investing Skillpoints.
• Scanning: Every unknown object (ghost or item) must be scanned before it can be caught. Only after it is scanned, a distance indicator is shown below the object in the Camera View. Scanning starts automatically when an object is displayed in the Scanner Screen if it is within your Scan Range. A progress bar shows the scan progress. If the object disappears from the screen before scanning is complete, the scan is aborted.
• Settings: Settings can be changed by selecting the Settings item in the Start Screen menu.
• Short Game: The short game time limit is 15 minutes by default, but this can be changed in the Settings.
• Skill Points: After advancing a Level, you are awarded 5 Skill Points to invest in your Skills. You can also increase your skill for the duration of a game by finding and catching certain items. There are even items that will improve your skills permanently, but they are very hard to find!
• Skills: Your Skills determine some important capabilities in the game. Each skill can be improved by investing Skillpoints. The skills are: Spot Range, Scan Range, Ghost Catch Range, Item Catch Range, Item Find Chance.
• Spot Range: Only objects within this range will be shown in the Camera View. When you advance a Level, you can invest Skillpoints to increase your Spot Range. Your Spot Range starts at almost 500 feet (150 meter) at Level 1.
• Start Screen: When you start SpecTrek, the Start Screen will appear. Here you can select the time limit of the game you want to play (short, medium, long). Using the menu, you can also change settings, or manipulate Player Profiles.
• Statistics: Detailed statistics of your SpecTrek accomplishments are recorded. You can examine them by selecting the Statistics item from the Game Control Screen menu. Statistics are plotted in a number of graphs. The basic display shows statistics per day, but if you swipe the graph horizontally, you can examine other time periods (per week and per month).
• Twitter Support: In the Settings you can enable Twitter Support. Enter your Twitter account name and password, and your SpecTrek exploits will be twittered automatically. You can even choose which events you want to twitter ranging from all ghost/item catches to only level completion and achievement events.