Yes—you can play the parabolic target game without a mouse by focusing the slingshot range, moving the pull point with the Arrow keys in five-pixel steps, and launching with Space or Enter.
The keyboard route in Slingshot Launcher is a supported play mode. Keyboard, mouse, trackpad, stylus, and touch input all use the same allowed pull range, fixed targets, trajectory rules, and collision checks. The difference is how you set the pull: a pointer player drags the projectile away from the target, while a keyboard player moves the pull point with the arrow keys.
One keyboard-specific condition matters: focus must be on the slingshot range before its arrow keys and launch keys will work. The game scopes that handling to the focused range, so it does not intercept arrow keys or Enter on Restart or other page controls. If an arrow key moves the page or Enter activates another control, move browser focus back to the slingshot range before aiming.
Keyboard and pointer controls compared
All input methods set the same kind of pull before the game calculates a shot. The projectile moves opposite the pull, so aiming at a target on the right means setting the pull on the left. Aiming downward on the screen means setting the pull below the launcher, which sends the projectile upward.
| Input method | How to set the pull | How to launch |
|---|---|---|
| Keyboard | Focus the slingshot range, then move the pull point in five-pixel steps with the Arrow keys. | Press Space or Enter while the range remains focused. |
| Mouse, trackpad, stylus, or touch | Start on the projectile, drag away from the target, and release to set the opposite launch vector. | Release the pointer or touch contact. |
The pull length is capped at the same authored play range for every input method. Keyboard aiming is quantized to five-pixel steps, while pointer aiming follows the position of the drag. The Launch aimed shot button also provides an explicit activation route for the current aim, but it does not change the underlying opposite-pull rule.
For pointer players, this guide to dragging opposite every target explains that rule in more detail. A pull selected with the keyboard follows the same cap and trajectory calculation as a pull selected with a pointer.
Play all five levels with only the keyboard
Use this sequence whenever you want to complete a run without a pointing device:
- Move focus to the slingshot range. Use your browser’s normal keyboard focus navigation until the game’s interactive range has focus.
- Identify the circular target. Each of the five levels contains one target at a fixed location on the 640 by 360 playfield.
- Set the pull opposite the intended flight direction. If the target is to the right, move the pull point to the left. If the target is above the launcher, move the pull point below it.
- Adjust with the Arrow keys. Each keyboard adjustment moves the pull point in five-pixel steps. The keys set the pull before launch; they do not steer the projectile after it has been released.
- Check the lighter preview. The preview responds to the current pull, giving you a visual indication of the path before you commit the shot.
- Press Space or Enter to launch. The game calculates the complete path immediately and checks whether it crosses the target area.
- Read the dotted path after a miss. If the shot falls short, reaches too far, or passes to one side, keep the range focused and use the Arrow keys to change the pull before launching again.
- Continue after a hit. A successful hit clears the level, awards exactly 200 points, and reveals the next target. Clear all five to finish with exactly 1,000 points.
- Use Restart if the run locks. Two different normalized miss patterns cause the current run to stop and request Restart. Use that control to return to the initial state.
Because the result is computed synchronously, a slow browser or a hidden tab does not change the trajectory after you press the launch key. The path shown after the shot is the same path used for the target check.
How the curved path is calculated
The game uses the familiar constant-acceleration component form. Horizontal position follows x = x₀ + vₓ × t, while screen-coordinate height follows y = y₀ + vᵧ × t + 0.5 × g × t². To derive the launch vector, the game subtracts the released pull point from the fixed launcher origin and applies its product-authored velocity scale. Pulling left therefore creates positive horizontal velocity, while pulling downward creates negative vertical velocity in the screen coordinate system, where smaller y values appear higher on the display.
The equation structure follows the standard projectile-motion decomposition described by OpenStax Physics in Section 5.3 and independently confirmed by Boston University Physics. The game computes positions over a fixed four-second path window at 0.02-game-second intervals rather than relying on a frame-by-frame physics engine.
Collision checking also accounts for speed. The game tests every adjacent trajectory segment against the circular target using the combined target and projectile radii. That segment test prevents a fast path from passing through the target between two sampled points without being recognized as a hit.
This is a recreational aiming game, not a real-world ballistics calculator. Gravity, velocity scale, launcher position, target centers, radii, timing, and scoring use authored pixel units and game seconds. They are not calibrated to Earth’s gravity, a physical slingshot, projectile mass, elastic-band behavior, air resistance, wind, or a real-world distance.
Reading a miss and recovering from a lock
Two lines help you diagnose a failed shot. The lighter preview follows your current pull before launch, while the dotted line shows the last calculated path. Compare the dotted path with the target’s position, then change the pull with the Arrow keys. You can also make another pointer drag if you switch input methods, but that is not required for mouse-free play.
Misses are recorded as normalized five-pixel pull signatures. Repeating the same normalized signature does not count as another distinct failure because it provides no new attempt pattern. A second different failed signature locks the current run and asks you to use Restart. A successful hit clears that level’s failure signatures before the next target appears.
Some invalid inputs leave the current state unchanged. For example, a pull that is too short, too long, or otherwise invalid will not trigger a launch. Completed levels and locked runs also freeze the launch logic, preventing extra shots from changing the result.
Nothing in the game is random. If a particular pull hits after Restart, the same pull will produce the same result again. That makes keyboard aiming a repeatable process: note the successful pull, restart if necessary, and reproduce it in five-pixel steps.
Scores and fixed level rules
The game has a short, fixed progression. A level ends when its single target is hit, and the next level supplies another target. There are no random target layouts or alternate scoring rules to account for while using the keyboard.
| Game element | Defined value |
|---|---|
| Number of levels | Five |
| Target per level | One circular target at a fixed location |
| Playfield size | 640 by 360 pixels |
| Points for a target hit | Exactly 200 points |
| Completion score | Exactly 1,000 points after all five targets are hit |
| Keyboard aim increment | Five pixels per Arrow-key adjustment |
| Failure signature | Normalized to five-pixel pull patterns |
| Trajectory window | Four game seconds, sampled at 0.02-game-second intervals |
The score is based on completed target hits rather than the number of attempts. You can experiment with pulls within the authored range, but an unsuccessful launch may contribute another distinct miss signature. Once all five targets have been cleared, the run is complete and its launch controls freeze.
Browser setup, privacy, and reliability
The Slingshot Launcher runs locally in a browser and requires no account, paid API, server calculation, hardware sensor, or downloaded package. Your drag coordinates, trajectory values, scores, and best-score records are not uploaded. When browser storage is available, the shared game shell keeps only your best completed score on that device; private browsing or blocked storage simply removes that convenience.
Keyboard input is not a simplified scoring mode. The arrow-key adjustments, capped pull range, calculated path, collision test, two-miss lock, Restart behavior, and exact point awards all follow the same product rules as pointer play. The only practical adjustment is that keyboard aim is made in five-pixel steps instead of being positioned directly with a drag.
You can therefore complete the parabolic target game without a mouse: focus the range, set an opposite pull with the Arrow keys, inspect the preview, and launch with Space or Enter. If the shot misses, use the dotted path and another five-pixel adjustment; if two different miss patterns lock the run, use Restart and reproduce the pull that worked.
If you're weighing options, 2048 Game Offline: Play Locally in Your Browser covers this in detail.