Heuristic Evaluation on Deadball Specialist HD - Results

8/9/2019 Heuristic Evaluation on Deadball Specialist HD - Results

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About meI am a Thomas Davies; a 20 year old Creative Computing undergraduate studying at

Coventry University, with an interest in UX and IxD.



IntroductionI will be conducting a short heuristic analysis on

Deadball Specialist HD for the iPad. This gamewas developed by Full Fat Games.



The AppDeadball Specialist HD is a football-based game

that challenges users to hit targets past a wall ofdefenders. There are two game modes; Quickfire

and Challenges. In Quickfire mode, the user has

to score as many points within 60 seconds. In

Challenges mode, the user has as long as they

want, but the targets are harder to hit. The iPad-only (non-universal) game has support for the

OpenFient network, allowing users to compete

against their friends and users around the world

as well as share their scores to Twitter and

Facebook.



Tap to Play Violation: Aesthetic and minimalist design

Severity Rating: Low

Description

The 'Tap to Play' introduction screen adds

unnecessary complexity to the app loading

process. The user has already had to wait 5

seconds for the app to load, and this additional

screen merely slows their progress. If they

decided to open your app, then they clearly

wanted to play the game, making this screen

irrelevant.

Recommendation

Remove this screen from the app. After the app

has loaded, elegantly transition the user from the

splash screen to the menu.



Disable Ti lt and Invert Swerve Violation: Consistency & standards

Severity Rating: Moderate

Description

The ‘Disable Tilt’ and ‘Invert Swerve’

buttons do not conform to iOS

standards. The two buttons

effectively act as an On/Off switch,

and the red border after selection

does not indicate whether the option

is activated or not. Moreover, these

two options look exactly the same

as the ‘Credits’ button but act

completely differently.



Disable Ti lt and Invert SwerveRecommendation

Remove the buttons and replace with the Switch UI element.

ON

OFF

Disable Tilt

Invert Swerve

1

1Standard iOS switch element. Usersalready know how to interact with thiselement.

2

2Credits button is now visually differentto the above options. It is clearer tousers that this will produce a differentresult.



Audio Settings Violation: Match between system

and the real worldSeverity Rating: Moderate

Description

There are no labels on these sound

sliders so therefore it is difficult to

know what they change. While you

get audio feedback from the one on

the right - suggesting this is for the

background music? - the left-hand

side slider provides no audio

feedback. I can only presume the

one on the left changes the sound

effects, but it is still unclear.

1 3

21 1What does this symbolmean? It has nothing to do

with sound effects.

2 Is this for music?

3This symbol means highvolume but it is placed at thebottom of the slider.



Audio SettingsRecommendation

Make the audio sliders horizontal so more information can be displayed, and place themunderneath the ‘Player Name’ box.

Background Music

In-Game Sound Effects

1

2 3

1Titles make it clearer to users whatthe slider changes.

2Clearly indicates that moving theslider to that icon will reduce audio.

3Clearly indicates that moving theslider to that icon will increase audio.



End of Game Violation: Consistency and

standards, Error preventionSeverity Rating: Moderate

Description

The ‘Next Level’ and ‘Exit to Menu’

buttons are visibly similar, yet

provide differing actions. One allows

the user to progress through the

game, while the other exits that

game, sending the user to the main

menu screen. Also, the ‘Exit to

Menu’ button is very close to the

other two options, possibly allowing

for accidental taps.

1

2

1The button used to progress to the next

level is coloured red; the same colour asthe destructive 'Exit to Menu' button.

2Small gap between the 'Retry' and 'Exitto Menu' buttons. Users could easilyselect the wrong option and end thegame.



End of GameRecommendation

Alter the ‘Next Level’ button so that it has a green background and distance the ‘Exit toMenu’ button from the ‘Next Level’ and ‘Retry’ buttons.

Retry

Next Level

Exit to Menu

1

2

1The button colour correctly reflectsthe action. Easily distinguishablefrom the 'Exit to Menu' button.

2 Button is now a fair distance awayfrom the other two. Will limit theamount of accidentally taps on the'Exit to Menu' button.



Reset Data Violation: Consistency & standards

Severity Rating: HighDescription

The Reset Data screen can allow for

very destructive actions, yet it

p r o v i d e s l i t t l e i n f o r m a t i o n

concerning what data will be

removed. Moreover, the buttons

chosen are incorrectly coloured, as

red should be used for the

destructive action; not green.

1

1The colour green should not be used when the command isdestructive. Using green and the tick suggests this action is positive.

Examples of Destructive Buttons - Twitterrific & Notes



Reset DataRecommendation

Provide more information concerning what data will be removed, change the colour of thebuttons and have the buttons state what action they will do upon selection.

1 Use the word 'Delete' instead of 'Reset' to emphasise what willhappen when they confirm the option.

2 Provides some context on what information will be lost.

3The destructive button is now coloured red to heighten itsimportance. The button text actually states what the user willdoing.

No Delete Data3

Are you sure you want to

delete the data?

You will lose all your top scores2

1



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Heuristic Evaluation on Deadball Specialist HD - Results

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